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Age distribution of RTIs with M. Pneumoniae from 2014 to 2020. Children and adolescents comprised the main population of M. Pneumoniae infection, of which those aged 4–14 years old were the high-risk group. In adults, the positive rate of M. Pneumoniae decreased gradually after the age of 20, and the positive rate of elderly patients was very low. RTIs, respiratory tract infections.
